The FAITH! Trial: A mHealth Intervention to Improve Cardiovascular Health Among African-Americans

Smoking Status Category

Time Frame: 6 Months post-intervention

Change in the categorical score (poor, intermediate, ideal) of the smoking status LS7 component from baseline to 6 months. Poor = Current Smoker, Intermediate = Former Smoker (\<1 year), Ideal = Never or Former (\>1 year).

Intervention Feasibility Measures - Participant Engagement With Tracking

Time Frame: 6 months post-intervention

Participant engagement with weekly diet/physical activity tracking measured by number of times participant engaged with the tracking feature at 6 months post-intervention

Blood Pressure Change

Time Frame: 6 months post-intervention

Change from baseline blood pressure at 6 month post-intervention. (average of 3 sitting readings of systolic and diastolic pressures)

Number of Participants With and Without Engagement With Sharing Board

Time Frame: Immediate post-intervention

Participant engagement with sharing board measured by number of posts per month by each participant at immediate post-intervention

Fasting Glucose (Fingerstick)

Time Frame: 6 months post-intervention

Change from baseline to 6 months post-intervention fasting glucose

Fasting Lipid Panel

Time Frame: 6 months post-intervention

Change in fasting lipid panel from baseline to 6 months post-interventio

BMI

Time Frame: 6 months post-intervention

Change from baseline BMI at 6 months post-intervention

Life's Simple 7 Composite Score Change

Time Frame: 6 months post-intervention

Change from baseline Life's Simple 7 Composite Score at 6 month post-intervention The Life's Simple 7 Composite Score is adapted from the American Heart Association standards based on health assessment data and is a composite of each component (average BP from 3 readings, fasting lipid panel and glucose, height, weight, self-reported cigarette smoking status, dietary quality, and physical activity patterns). Point values are assigned to each component: 2 points for ideal, 1 point for intermediate, 0 points for poor. The total sum allows for a continuous measure of cardiovascular health ranging from poor to ideal (0-14 points). The final score will be categorized as 0-6 (poor), 7-8 (intermediate), 9-14 (ideal).

Intervention Feasibility Measures - Participant Engagement With Sharing Board

Time Frame: Immediate post-intervention

Participant engagement with sharing board measured by the number of participants sharing at least one discussion board post during the intervention

Dietary Quality (According to American Heart Association Guidelines by the Validated, Culturally Appropriate, Delta Nutrition Intervention Food Frequency Questionnaire-FFQ)

Time Frame: 6 months post-intervention

Dietary quality was measured using a checklist of foods and beverages, self-reported by participants at baseline and 6 months post-intervention. Responses range from never to 2 or more times per day (responses: never, \< once/month, once/month, 2-3 times/month, 1 time/week, 2 times/week, 3-4 times/week, 5-6 times/week, 1 time/day, 2 or more times/day). Nutrient intake was estimated via a computer software, multiplying reported food frequency by nutrient content, following by comparison to AHA guidelines. Healthy diet score include 5 components: 1. fruits and vegetables, ≥4.5 cups/d 2. fish, 2 or more 3.5-oz servings/wk 3. fiber-rich whole grains (≥1.1 g fiber/10 g carbohydrate), 3 or more 1-oz-equivalent servings/d 4. sodium, ≤1500 mg/d 5. sugar-sweetened beverages, ≤450 kcal/wk. Each component equals 1 point, resulting in scores from 0 to 5, which are categorized as Poor (0-1), Intermediate (2-3), or Ideal (4-5). Higher scores indicated better dietary quality.

Intervention Feasibility Measures - App Usability

Time Frame: 6 months post-intervention

App usability assesses four domains (Impact, Perceived usefulness, Perceived ease of use, User control) using the Health Information Technology Usability Evaluation Scale (Health-ITUES) instrument. 20 items are assessed, each on a 5-point scale ranging from 1 (strongly disagree) to 5 (strongly agree). The overall Health-ITUES score was calculated as the mean of all 20 items, with each item being equally weighted. Possible total scores range from 1.0 (minimum) to 5.0 (maximum). A higher total sum indicates higher perceived usability of the technology measured at 6 months post-intervention.

Physical Activity Patterns (Minutes/Week of Moderate and Vigorous Intensity Physical Activity, Measured by the International Physical Activity Questionnaire-IPAQ)

Time Frame: 6 months post-intervention

Change from baseline to 6 months post-intervention in the total minutes per week that a participant engaged in moderate and vigorous intensity physical activity.

Intervention Feasibility Measures - Participant Engagement With Modules

Time Frame: Immediate post-intervention

App engagement as measured by the number of modules completed by the participants during the intervention. The number of participants who completed \<5 and ≥5 modules (out of 10) was calculated.